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Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV

Publication ,  Journal Article
Chekhovsky, V; Hayrapetyan, A; Makarenko, V; Tumasyan, A; Adam, W; Andrejkovic, JW; Benato, L; Bergauer, T; Chatterjee, S; Damanakis, K; Li, A ...
Published in: Journal of High Energy Physics
June 1, 2025
Published version (DOI)

The jet axis decorrelation in inclusive jets is studied using lead-lead (PbPb) collisions at a center-of-mass energy per nucleon pair of 5.02 TeV. The jet axis decorrelation is defined as the angular difference between two definitions of the jet axis. It is obtained by applying two recombination schemes on all the constituents of a given jet reconstructed by the anti-kT sequential algorithm with a distance parameter of R = 0.4. The data set, corresponding to an integrated luminosity of 0.66 nb−1, was collected in 2018 with the CMS detector at the CERN LHC. The jet axis decorrelations are examined across collision centrality selections and intervals of jet transverse momentum. A centrality dependent evolution of the measured distributions is observed, with a progressive narrowing seen in more central events. This narrowing could result from medium-induced modification of the internal jet structure or reflect color charge effects in energy loss. This new measurement probes jet substructure in previously unexplored kinematic domains and show great promise for providing new insights on the color charge dependence of energy loss to jet-quenching models.

Duke Scholars

Sua Yoo
Author Sua Yoo Radiation Oncology

Published In

Journal of High Energy Physics

DOI

10.1007/JHEP06(2025)120

EISSN

1029-8479

Publication Date

June 1, 2025

Volume

2025

Issue

6

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics
 

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Chekhovsky, V., Hayrapetyan, A., Makarenko, V., Tumasyan, A., Adam, W., Andrejkovic, J. W., … Chinellato, J. (2025). Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV. Journal of High Energy Physics, 2025(6). https://doi.org/10.1007/JHEP06(2025)120
Chekhovsky, V., A. Hayrapetyan, V. Makarenko, A. Tumasyan, W. Adam, J. W. Andrejkovic, L. Benato, et al. “Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV.” Journal of High Energy Physics 2025, no. 6 (June 1, 2025). https://doi.org/10.1007/JHEP06(2025)120.
Chekhovsky V, Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Andrejkovic JW, et al. Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV. Journal of High Energy Physics. 2025 Jun 1;2025(6).
Chekhovsky, V., et al. “Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV.” Journal of High Energy Physics, vol. 2025, no. 6, June 2025. Scopus, doi:10.1007/JHEP06(2025)120.
Chekhovsky V, Hayrapetyan A, Makarenko V, Tumasyan A, Adam W, Andrejkovic JW, Benato L, Bergauer T, Chatterjee S, Damanakis K, Dragicevic M, Hussain PS, Jeitler M, Krammer N, Li A, Liko D, Mikulec I, Schieck J, Schöfbeck R, Schwarz D, Sonawane M, Waltenberger W, Wulz CE, Janssen T, Kwon H, Van Laer T, Van Mechelen P, Breugelmans N, D’Hondt J, Dansana S, De Moor A, Delcourt M, Heyen F, Hong Y, Lowette S, Makarenko I, Müller D, Tavernier S, Tytgat M, Van Onsem GP, Van Putte S, Vannerom D, Bilin B, Clerbaux B, Das AK, De Bruyn I, De Lentdecker G, Evard H, Favart L, Gianneios P, Khalilzadeh A, Khan FA, Malara A, Shahzad MA, Thomas L, Vanden Bemden M, Vander Velde C, Vanlaer P, De Coen M, Dobur D, Gokbulut G, Knolle J, Lambrecht L, Marckx D, Skovpen K, Van Den Bossche N, van der Linden J, Vandenbroeck J, Wezenbeek L, Bein S, Benecke A, Bethani A, Bruno G, Caputo C, De Favereau De Jeneret J, Delaere C, Donertas IS, Giammanco A, Guzel AO, Jain S, Lemaitre V, Lidrych J, Mastrapasqua P, Tran TT, Turkcapar S, Alves GA, Coelho E, Correia Silva G, Hensel C, Menezes De Oliveira T, Mora Herrera C, Rebello Teles P, Soeiro M, Tonelli Manganote EJ, Vilela Pereira A, Aldá Júnior WL, Barroso Ferreira Filho M, Brandao Malbouisson H, Carvalho W, Chinellato J. Search for medium effects using jet axis decorrelation in inclusive jets from PbPb collisions at = 5.02 TeV. Journal of High Energy Physics. 2025 Jun 1;2025(6).
Journal cover image

Published In

Journal of High Energy Physics

DOI

10.1007/JHEP06(2025)120

EISSN

1029-8479

Publication Date

June 1, 2025

Volume

2025

Issue

6

Related Subject Headings

  • Nuclear & Particles Physics
  • 5107 Particle and high energy physics
  • 5106 Nuclear and plasma physics
  • 4902 Mathematical physics
  • 0206 Quantum Physics
  • 0202 Atomic, Molecular, Nuclear, Particle and Plasma Physics
  • 0105 Mathematical Physics